<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    .circle {
      position: relative;
      height: 600px;
      width: 600px;
      margin: 0 auto;
    }

    .dotted {
      position: absolute;
      left: 50%;
      top: 50%;
      transform: translate(-50%, -50%);
      width: 8px;
      height: 8px;
      background-color: #09f;
      border-radius: 50%;
    }

    .circle div[class^="pulse"] {
      position: absolute;
      left: 50%;
      top: 50%;
      transform: translate(-50%, -50%);
      height: 8px;
      width: 8px;
      border-radius: 50%;
      box-shadow:  0 0 12px #009dfd;
      animation: pulse 1.2s linear infinite;
    }

    .test {
      width: 40px;
        height: 40px;
        opacity: 1;
        background-color: pink;
        border-radius: 50%;
        box-shadow:  0 0 12px pink;
    }

    @keyframes pulse {
      0% {
        
      }

      70% {
        width: 40px;
        height: 40px;
        opacity: 1;
      }

      100% {
        width: 70px;
        height: 70px;
        opacity: 0;
      }
    }
  </style>
</head>
<body>
  <div class="circle">
    <div class="dotted"></div>
    <div class="pulse1"></div>
    <div class="pulse2" style="animation-delay: 0.4s;"></div>
    <div class="pulse3" style="animation-delay: 0.8s;"></div>
  </div>
  <div class="test"></div>
</body>
</html>